| Nea Filadelfeia to Olympia Heights (Florida) | 5,842.25 mi (9,402.19 km) |
| Nea Filadelfeia to Omaha (Nebraska) | 5,773.16 mi (9,291.01 km) |
| Nea Filadelfeia to On Top of the World Designated Place (Florida) | 5,782.98 mi (9,306.81 km) |
| Nea Filadelfeia to Onalaska (Wisconsin) | 5,470.62 mi (8,804.11 km) |
| Nea Filadelfeia to Oneida (New York) | 4,900.14 mi (7,886.02 km) |
| Nea Filadelfeia to Oneonta (New York) | 4,899.69 mi (7,885.29 km) |
| Nea Filadelfeia to Ontario (California) | 6,873.62 mi (11,062.02 km) |
| Nea Filadelfeia to Ontario (Oregon) | 6,258.35 mi (10,071.84 km) |
| Nea Filadelfeia to Opa-locka (Florida) | 5,830.47 mi (9,383.24 km) |
| Nea Filadelfeia to Opelika (Alabama) | 5,760.51 mi (9,270.64 km) |
| Nea Filadelfeia to Opelousas (Louisiana) | 6,149.19 mi (9,896.17 km) |
| Nea Filadelfeia to Orange (California) | 6,893.88 mi (11,094.63 km) |
| Nea Filadelfeia to Orange (Texas) | 6,239.44 mi (10,041.41 km) |
| Nea Filadelfeia to Orange City (Florida) | 5,744.52 mi (9,244.91 km) |
| Nea Filadelfeia to Orangeburg (South Carolina) | 5,524.40 mi (8,890.67 km) |
